Improved Measurements of Branching Fractions for B0 -> pi+pi-, K+pi-, and Search for K+K- at BaBar
| dc.creator | The BABAR Collaboration | |
| dc.creator | Aubert, B. | |
| dc.date | 2005-08-22 | |
| dc.date.accessioned | 2026-07-07T03:37:03Z | |
| dc.date.available | 2026-07-07T03:37:03Z | |
| dc.description | We present preliminary measurements of branching fractions for the charmless two-body decays B0 -> pi+pi- and K+pi-, and a search for B0 -> K+K- using a data sample of approximately 227 million BBbar decays. Signal yields are extracted with a multi-dimensional maximum likelihood fit, and the efficiency is corrected for the effects of final-state radiation. We find the charge-averaged branching fractions (in units of 10^{-6}): Br(B0 -> pi+pi-) = 5.5 +- 0.4 +- 0.3, Br(B0 -> K+pi-) = 19.2 +- 0.6 +- 0.6, Br(B0 -> K+K-) = < 0.40. The errors are statistical followed by systematic, and the upper limit on K+K- represents a confidence level of 90%. | |
| dc.description | 15 pages, 12 postscript figues, presented at EPS 2005 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0508046 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0508046 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/37962 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Improved Measurements of Branching Fractions for B0 -> pi+pi-, K+pi-, and Search for K+K- at BaBar | |
| dc.type | text |